CONTRIBUTIONS TO PAL/EONTOLOGY 



UPPER CRETACEOUS FLORAS OF THE 

 ROCKY MOUNTAIN REGION 



II: FLORA OF THE LANCE FORMATION AT ITS 

 TYPE LOCALITY, NIOBRARA COUNTY. WYOMING 



By Erling Dorf 



Princeton University 



With Beventeen plates and 3 text figurea 



[Issued October 2, 1942] 



